728299706273 has 2 divisors, whose sum is σ = 728299706274. Its totient is φ = 728299706272.

The previous prime is 728299706243. The next prime is 728299706317. The reversal of 728299706273 is 372607992827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 455494059409 + 272805646864 = 674903^2 + 522308^2 .

It is a cyclic number.

It is not a de Polignac number, because 728299706273 - 2¹⁴ = 728299689889 is a prime.

It is not a weakly prime, because it can be changed into another prime (728299706243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364149853136 + 364149853137.

It is an arithmetic number, because the mean of its divisors is an integer number (364149853137).

Almost surely, 2^728299706273 is an apocalyptic number.

It is an amenable number.

728299706273 is a deficient number, since it is larger than the sum of its proper divisors (1).

728299706273 is an equidigital number, since it uses as much as digits as its factorization.

728299706273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32006016, while the sum is 62.

The spelling of 728299706273 in words is "seven hundred twenty-eight billion, two hundred ninety-nine million, seven hundred six thousand, two hundred seventy-three".